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  2. EICAR test file - Wikipedia

    en.wikipedia.org/wiki/EICAR_test_file

    The file is a text file of between 68 and 128 bytes [6] that is a legitimate .com executable file (plain x86 machine code) that can be run by MS-DOS, some work-alikes, and its successors OS/2 and Windows (except for 64-bit due to 16-bit limitations). The EICAR test file will print "EICAR-STANDARD-ANTIVIRUS-TEST-FILE!" when executed and then ...

  3. Microsoft Defender Antivirus - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Defender_Antivirus

    This improved the application's performance. Also, since Beta 2, the program works as a Windows service, unlike earlier releases, which enables the application to protect the system even when a user is not logged on. Beta 2 also requires Windows Genuine Advantage (WGA) validation. However, Windows Defender (Beta 2) did not contain some of the ...

  4. Malware - Wikipedia

    en.wikipedia.org/wiki/Malware

    An example of this is a portable execution infection, a technique, usually used to spread malware, that inserts extra data or executable code into PE files. [34] A computer virus is software that embeds itself in some other executable software (including the operating system itself) on the target system without the user's knowledge and consent ...

  5. Service Control Manager - Wikipedia

    en.wikipedia.org/wiki/Service_Control_Manager

    Each service's registry key contains an optional Group value which governs the order of initialization of a respective service or a device driver, with respect to other service groups. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services , which contains the actual database of services and device drivers and is read into SCM's internal database ...

  6. Antivirus software - Wikipedia

    en.wikipedia.org/wiki/Antivirus_software

    The possibility of embedding executable objects inside otherwise non-executable file formats can make opening those files a risk. [56] Later email programs, in particular Microsoft's Outlook Express and Outlook, were vulnerable to viruses embedded in the email body itself. A user's computer could be infected by just opening or previewing a ...

  7. Executable-space protection - Wikipedia

    en.wikipedia.org/wiki/Executable-space_protection

    In computer security, executable-space protection marks memory regions as non-executable, such that an attempt to execute machine code in these regions will cause an exception. It makes use of hardware features such as the NX bit (no-execute bit), or in some cases software emulation of those features.